Having problems with your 2005 GMC Sierra ?
Oil pressure gauge goes to 80 psi when the truck key is turned on
\015 When I turn the key to the on position, the oil pressure gauge goes to 80 psi. Where is the oil sending unit located on a 2005 GMC 2500 HD 4x4 w/6.0 L and 4L60E trans? or could it be the guage itself?\015
Chances are your sending unit is not bad. These dashes have had alot of problems with stepper motors failing in the instrument cluster. does it go to zero when key is off? is it erratic? changes where it sits when running and when off? These are all problems within the cluster itself. It is not cheap to take this to the dealer. THey will want to replace the cluster. these clusters can be repaired for half the cost if you know where to go. Not sure yet what the rules are on here but i can repair these for about 325 verses over 600 from dealer and then reproggramming costs! One other note. Chevy has a recall on these! call you local dealer and ask what the criteria is for the recall. You may be able to get it repaired for free if you meet the time frame and mileage requirements.
Repair Help & Product Troubleshooting for 2005 GMC Sierra
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